Puzzling tetra behavior video

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UNC-CH created the topic: Puzzling tetra behavior video

This video shows my fluval tank which houses five neon tetras. After eating, two of them do this weird thing that can be seen in the video. They angle themselves downward and bob up and down like a cork being jerked by a string. They do this for *hours* -- this was shot 4 hours after feeding. The other 3 tetras never do this and can be seen swimming normally in the video.

Has anyone seen behavior like this before? Any ideas? They've been doing this for a long time ... maybe since I've had them (~ 9 mo), so I don't think they're sick. I just find it very puzzling that only 2 of 5 exhibit this odd behavior.

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Rocksor replied the topic: Puzzling tetra behavior video

maybe a dominance display
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purplecandle replied the topic: Puzzling tetra behavior video

Ok, I just did a TON of searching for you. Good news - it's common. Bad news - most fish die, most people decide it's swim bladder.

However!!! 99 % of those people poorly house the fish in bad water quality. And the fish die within days.

I don't think this is the case for you. After digging I found only ONE person whose fish did this after eating and she had a great explanation....

“Mine do that after they eat..I think they just gulp too much air when they grab the flakes from the surface(they swim upright w/heads pointed down and seem to be trying to swim down while floating back to the surface)...they usually swim normally after a few hours."
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